DCE (data communication device or data circuit terminal equipment): The device and its connection to the communication network constitute the network Terminal user network interface. It provides a physical connection to the network, forwarding traffic, and provides a clock signal to synchronize data transfer between the DCE device and the DTE device. Both modem a
First, in the Cisco Remote Access server, with three pairs of lines to connect the DTE and DCE, each pair of lines, one sent,
a receipt:
1. TX/RX Data transmission Line
Send: Dte->tx->dce
Receive: Dte
DCE device (MODEM) sends
In the low-end router using DISP interface to view the corresponding serial port status information, including DCD, DTR, DSR, RTS and CTS, such as five status indicators respectively mean? DCD (Data Carrier Detect-carrier detection) DTR (data Terminal ready, terminal prepared) DSR (data Set Ready), RTS (Request to send) CT S (Clear to send clean send) in these five control signals, DTR and RTS are DTE devices (data terminal equipment, which is the rou
In 2000, researchers at William Mary College in the United States, Serge, and others at the Usenix 4th annual Linux Showcase conference Conference, published the title "Domainand Type Enforcement for Linux "article. The first time this article used the DTE model for Linux, the DTE Linux prototype system was implemented.The same year, the NSA's Stephen Smalley and others released the open source Linux securi
Docker Container Executor (DCE) is an important feature of Hadoop 2.6.0: Big Data's giant Hadoop can finally take advantage of the power of the beloved Docker in the current virtualization/Cloud world.There are a lot of articles about Docker concept, so this article is not going to go into it, just refer directly to the description in the Hadoop community: "Docker (https://www.docker.io/) combines an easy-to-use interface to Linux containers with easy
Release date:Updated on:
Affected Systems:Samba 4.xSamba 3.xDescription:--------------------------------------------------------------------------------CVE (CAN) ID: CVE-2013-4408
Samba is a set of programs that implement the SMB (Server Messages Block) protocol, cross-platform file sharing and print sharing services.
Samba 3.4.0-3.4.17, 3.5.0-3.5.22, 3.6.0-3.6.21, 4.0.0-4.0.12, 4.1.2 handle DCE-RPC reports, winbindd background program has a boundary
parameter lcn is not selected, all SVC on the X.25 interface will be cleared, and all PVC will be restored, that is, a restart event will occur ).Command mode]Privileged user modeUser Guide]Use this command to perform real-time maintenance on the virtual circuit of an X.25 interface, and initiate a clearance procedure for the specified virtual circuit for SVC) or recovery procedure for PVC ), or initiate a restart procedure for the specified interface. Note that this command takes effect only a
: 40 × 40 × 8; ② maximum switching establishment time: 200 μs; ③ maximum handshake line transmission latency: 125 μs; ④ maximum data transmission latency: less than 1 μs; ⑤ serial data rate: 8.192 Mbps.
1. Hardware Implementation
Under the control of the master unit, the Data Switching Matrix performs physical switching between the terminal data port and the channel data port. The switching matrix includes 40 DTE ports (including 24
I. RTS and CTS in the RS232 standardrts,cts------Request Send/clear send, for half-double hours of transceiver switching, belongs to the auxiliary flow control signal. Half-duplex means to say that when the hair is not received, when the collection is not sent. So how do you differentiate between sending and receiving? By default, the DCE sends data to the DTE, and when
4096000bps In addition, the synchronous serial ports support different baud rates for different physical and electrical procedures.
V.24 DTE/DCE: 1200 bps ~ 64 kbps V.35 DTE: 1200 bps ~ 4.096 Mbps V.35 DCE, X.21 DTE/DCE, EIA/TIA-
From https://www.ibm.com/developerworks/cn/linux/l-serials/
Introduction to serial ports
The serial port is a common interface for computers. It has a wide range of applications, such as a few connection lines and simple communication. Commonly used serial port is RS-232-C interface (also known as EIA RS-232-C) it was in 1970 by the American Association of Electronic Industry (EIA) the serial communication standard jointly developed by Bell systems, modem manufacturers, and computer terminal ma
What is a RS-232-C interface? What are the characteristics of the use of RS-232-C interface? How to consider the length of the transmission cable?
A: data transmission between a computer and a computer or between a computer and a terminal can be achieved through serial communication or parallel communication. Because the serial communication method has low line usage and low cost, especially in remote transmission, it avoids the inconsistency of multiple lines. In serial communication, both part
Introduction to serial ports
The serial port is a common interface for computers. It has a wide range of applications, such as a few connection lines and simple communication. Commonly used serial port is RS-232-C interface (also known as EIA RS-232-C) it was in 1970 by the American Association of Electronic Industry (EIA) the serial communication standard jointly developed by Bell systems, modem manufacturers, and computer terminal manufacturers. Its full name is "Technical Standard for Serial
Original address: http://www.cnblogs.com/feisky/archive/2009/10/23/1588771.html
Linux operating system from the beginning of the serial port provides a good support, this article on Linux under the serial port communication programming simple introduction.
Introduction of Serial portSerial port is a kind of common interface of computer, with few connecting lines, simple communication and wide use. The common serial port is the Rs-232-c interface (also known as EIA Rs-232-c), which w
sends data to the DCE, that is, when the terminal wants to send data, this signal is valid (ON status ), send a request to the MODEM. It is used to control whether the MODEM is going to be sent 。
Clear to send-CTS (Clear to send-CTS) -- indicates that the DCE is ready to receive data from the DTE and is a response signal to the request to send the RTS. When the
Before talking about this, we will first introduce another concept, DCE (Data Communication Equipment) speed. It refers to the transmission speed between two modem devices, that is, between telephone lines. We call 56k the speed. DTE (data terminal equipment) refers to the transmission speed from the local computer to the modem. If the telephone line transmission rate (
Transferred from: http://www.cnblogs.com/sunyubo/archive/2010/04/21/2282176.htmlI. RTS and CTS in the RS232 standardrts,cts------Request Send/clear send, for half-double hours of transceiver switching, belongs to the auxiliary flow control signal. Half-duplex means to say that when the hair is not received, when the collection is not sent. So how do you differentiate between sending and receiving? By default, the DCE sends data to the
. procedure featuresFor synchronous interfaces, the clock line is the most important feature in the procedure. The clock line refers to the 113, 114, and 115 circuits. The clock line plays a major role. The DTE or DCE interface must constantly use the clock from the peer clock line to correct its clock. Generally, the phase-locked loop circuit is used for clock synchronization ), to extract data correctly.
This paper takes Cisco router as an example, introduces the types, characteristics and application situations of common interfaces on routers.
1 Eia/tia 232
Eia/tia 232 is sometimes called the RS-232 c.rs (recommended Standard) on behalf of the recommended standards (EIA standards are generally referred to as "RS"), 232 is the identification number, C on behalf of the latest changes RS-232. It is by the American Electronics Association/Telecommunications Industry Association (ELECTRONIC Indust
dedicated asynchronous serial ports, and the interface name is async.
The asynchronous serial port can be set to a leased line or a dialing method. the dialing method is more commonly used in applications. When an asynchronous serial port is connected to an external modem or ISDN Ta, it can be used as a dialing interface. It encapsulates the Link Layer Protocol slip or PPP and supports network protocols such as IP and IPX.
Synchronous Serial Port features:
It can work in the
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